MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/20/02 through 04/26/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 96 221 317
Davis 118 4 122
Irvine 15 0 15
Los Angeles 0 51 51
Riverside 8 13 21
San Diego 18 39 57
San Francisco 21 0 21
Santa Barbara 1 25 26
Santa Cruz 4 23 27
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 2 34 36
Other-Network UC n/a 242 242
_______ ______ _____
283 674 957
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 864 2,563 19,794
BIO88 93 231 2,150
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 4 25
2-4 a.m. 12 26 112
4-6 a.m. 4 12 225
6-8 a.m. 22 43 877
8-10 a.m. 153 361 2,112
10-12 a.m. 230 715 5,063
12-2 p.m. 151 521 4,497
2-4 p.m. 159 449 3,964
4-6 p.m. 114 346 2,218
6-8 p.m. 52 134 1,374
8-10 p.m. 34 113 935
10-12 p.m. 24 70 542
__________ __________ __________ _________________
Total: 957 2,794 21,944
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 216 898 1,114
Davis 382 8 390
Irvine 37 0 37
Los Angeles 0 144 144
Riverside 26 37 63
San Diego 38 117 155
San Francisco 68 0 68
Santa Barbara 2 108 110
Santa Cruz 13 71 84
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 73 73
Los Alamos 0 0 0
Other - UC 2 84 86
Other-Network UC n/a 470 470
_______ ______ _____
784 2,010 2,794
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,757 7,998 10,755
Davis 2,315 2 2,317
Irvine 422 0 422
Los Angeles 0 1,994 1,994
Riverside 96 438 534
San Diego 218 757 975
San Francisco 216 0 216
Santa Barbara 1 687 688
Santa Cruz 10 722 732
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 911 911
Los Alamos 0 0 0
Other - UC 6 467 473
Other-Network UC n/a 1,927 1,927
_______ ______ _____
6,041 15,903 21,944
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:41
Average session length (minutes:seconds) 14:15
Longest session recorded (minutes:seconds) 423:12
Average number of searches completed per session 2.9
Retrievals per search - median 7.0
Retrievals per search - average 810.6
Retrievals per search - standard deviation 7720.7
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 1.8%
Percent of long searches completed
(includes partial results) 74.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,401 30.7%
DISPLAY (excluding automatic displays) 2,675 34.2%
BROWSE 0 0.0%
HELP 135 1.7%
EXPLAIN 122 1.6%
SET/RESET 425 5.4%
SHOW 47 0.6%
ADD ON (AND, OR, AND NOT) 393 5.0%
LOGON or LOGOFF 1,144 14.6%
COMMENT 0 0.0%
SAVE 225 2.9%
USE 3 0.0%
OTHER 261 3.3%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 835 31.8% 164 19.6% 17 127.5 527.3
TITLE WORD 519 19.8% 207 39.9% 6 177.1 706.9
EXACT TITLE 27 1.0% 15 55.6% 1 661.7 2287.7
KEYWORD 887 33.8% 155 17.5% 33 1778.5 11783.4
JOURNAL 85 3.2% 42 49.4% 3,132 12004.0 34503.1
EXACT JOURNAL 27 1.0% 12 44.4% 165 5179.1 8150.1
SOURCE 3 0.1% 1 33.3% 1,152 1152.0 1581.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 3 3.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 3 3.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 4 0.2% 2 50.0% 263 263.0 89.1
LANGUAGE 3 0.1% 0 0.0% 3 6.7 7.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 1 0.0% 0 0.0% 13 13.0 0.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 1 50.0% 877 877.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 100 3.8% 12 12.0% 3 462.2 4137.2
EXACT PE 39 1.5% 1 2.6% 2 9.5 21.2
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 90 3.4% 18 20.0% 49 1561.8 7310.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 231 9.7% 83 35.9% 5 54.2 229.8
Single 2,155 90.3% 462 21.4% 24 1291.0 9857.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 83.7%
LONG 1.4%
TAGS 2.5%
FIELDS 2.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.4%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. First word of command is invalid 31.9%
2. NS command - no next screen 22.5%
3. FIND command with invalid index name 14.9%
4. PS command - no previous screen 3.9%
5. DISPLAY command - no FIND results 3.6%
6. DATE search with unrecognized word 3.0%
7. DISPLAY command contains invalid word 2.7%
8. Search term missing from search command 2.6%
9. Valid command at an inappropriate time 1.5%
10. Index invalid in current database 1.5%
11. All others 11.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 33.6%
2. GUIDE 23.0%
3. INDEXES 7.4%
4. ADDON SEARCH 4.9%
5. COMMANDS 4.1%
6. FIND 3.3%
7. Unrecognized term 3.3%
8. BIOSIS DATABASE 1.6%
9. BIOSIS NEWS 1.6%
10. B925 1.6%
11. All others 15.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.1%
2. First word of command is invalid 16.3%
3. DISPLAY command-first of >1 screen 13.2%
4. FIND command with invalid index name 12.8%
5. FIND command retrieves >1 book 5.1%
6. DISPLAY command - middle of >1 screen 3.9%
7. PS command - no previous screen 2.7%
8. FIND command with zero results 2.3%
9. DISPLAY command-complete in one screen 2.3%
10. DISPLAY command - last of >1 screen 1.9%
11. All others 13.2%
Ten most frequent SHOW requests:
1. SEARCH 68.0%
2. HISTORY 12.0%
3. GLOSSARY 8.0%
4. PUBLICATION TYPES 4.0%
5. MAIL SETTINGS 4.0%
6. MAIL STATUS 4.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)